Fix YarpRobotLoggerDevice if YARP_ROBOT_NAME is not defined (#701)

Author: GiulioRomualdi

CHANGELOG.md

@@ -4,6 +4,7 @@ All notable changes to this project are documented in this file.
 ## [unreleased]
 ### Fixed
 - Fix python bindings compilation when toml is not installed (https://github.com/ami-iit/bipedal-locomotion-framework/pull/700)
+- Fix `YarpRobotLoggerDevice` if `YARP_ROBOT_NAME` is not defined (https://github.com/ami-iit/bipedal-locomotion-framework/pull/701)
 
 ## [0.14.0] - 2023-07-04
 ### Added

devices/YarpRobotLoggerDevice/src/YarpRobotLoggerDevice.cpp

@@ -449,7 +449,12 @@ bool YarpRobotLoggerDevice::setupTelemetry(
     }
 
     robometry::BufferConfig config;
-    config.yarp_robot_name = std::getenv("YARP_ROBOT_NAME");
+    char* tmp = std::getenv("YARP_ROBOT_NAME");
+    // if the variable does not exist it points to NULL
+    if (tmp != NULL)
+    {
+        config.yarp_robot_name = tmp;
+    }
     config.filename = "robot_logger_device";
     config.auto_save = true;
     config.save_periodically = true;